I find it hard to believe that a fox body has a .32 drag coefficient. that's very good for a modern car, not to mention a 20 yr old design. I think the hardtop vette is .32 and it looks much more aerodynamic.

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The fox3 mustang has .39 CD the 94,95 fox mustangs have 0.35

1987 - Cosmetically, the Mustang received a new front fascia, tail lamps, rear side window, and body-side moldings for both the base LX and GT . This new "aero-look" helped decrease the Mustang's CD to about 0.39 and increase top speed to about 145 MPH. (In comparison, the new fourth-generation Mustang has a CD of 0.35.)

In an October 1986 issue of Road & Track magazine, the Mustang GT edged-out the Camaro 5.7L IROC-Z in 0 to 60 times and Quarter mile speed. The GT sprinted to 60 MPH in just 6.7 seconds while the Camaro was ever so close at 6.8 seconds. Both cars reached the quarter mile in 15.3 seconds, but the GT's trap speed was 93.0 MPH; 3 MPH more than the Camaro's. Better yet, the 2-door 5.0L LX coupe could hammer the Quarter mile in mid-14s right off the showroom floor. WOW! (Mustang 3, Camaro 0)

In an October 1986 issue of Road & Track magazine, the Mustang GT edged-out the Camaro 5.7L IROC-Z in 0 to 60 times and Quarter mile speed. The GT sprinted to 60 MPH in just 6.7 seconds while the Camaro was ever so close at 6.8 seconds. Both cars reached the quarter mile in 15.3 seconds, but the GT's trap speed was 93.0 MPH; 3 MPH more than the Camaro's. Better yet, the 2-door 5.0L LX coupe could hammer the Quarter mile in mid-14s right off the showroom floor. WOW! (Mustang 3, Camaro 0)

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Was that GT an auto? 15.3 OUCH. Pretty cool though.

Didnt the 88's beat the 88 vettes in the 1/4 mile also? I've heard that some where but forget where.

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One thing you guys need to remember when you are talking about CD is designers often sacrifice CD for downforce. That is the reason the FOX hatch is more aerodynamic than a Porsche or a C5 Vette.

Where did you find those facts? Would you happen to know the drag coefficient of a fox coupe(notch)? Thanks

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I have been around these cars for a long time so I pick up info here and there. There was a thread about this a year or so ago. The notch is around .40, LX vert is .42. I don't remember the GT, but the GT vert is around .50.

Founding Member

How accurate is the speedo at those high speeds? I always heard the Fox speedometers weren't great to begin with and high speed just added to the inaccuracy. I saw 130mph in my car with the 3.55s but otherwise stock, and that speed was on a GPS, the speedo was reading over 140. I haven't had the courage to test again with the blower, but 5th gear pulls REALLY slowly and the car gets so floaty that I don't think I'll find out any time soon.

Sure would love to build my Fox to run 200mph out in Nevada or Bonnieville.

Very true..Steve did a test in early '87, where he took a stock lx mustang with 3.08 gears and did a top speed test..the car reached 141 mph. He took this same car, added the saleen kit, and springs and the car reached 149 mph...I believe the entire install took about 3 hrs, so the weather was pretty much the same during both tests.

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Just think of how good it would be with a chopped roof, slanted windshield and a belly pan with some lowering springs. All minor stuff of course Wasnt the berreta like .28 cd? I thought it was close to top honours? At least for its time.

Coupes make too much turbulence at the back end to be really effective top speed cars, Mine gets right hairy at around 120 mph And I know the 351 with 3.73's can top out fifth but I have not the balls to try it. Maybe with some serious aero mods and some real rubber Hell the end of the quarter mile is scary enough. Me thinks coupes should stick to auto - x and 1/4 mile stuff, they excel there.

i drive a capri and i ran across the drag coeficients some where. all i remember is than the capri was .03 less then the mustang of the same year about .36. only thing i can tell ya about top speed is that i got scared about 5 g in 5th.

r u serisous!!!?!?!?!?!??!?!?!?!??! they seem so. . . so . . . .blcoky. Like look and a fox body and then a porsche and the lack of lines and curves just make them seem so UNaerodynamic. But hey you learn something new everyday.